| PartNumber | DM74AS161M | DM74AS161N | DM74AS163M |
| Description | IC COUNTER 4BIT SYNC BIN 16SOIC | IC COUNTER 4BIT SYNC BIN 16DIP | IC COUNTER 4BIT SYNC BIN 16SOIC |
| Manufacturer | Fairchild Semiconductor | - | Fairchild Semiconductor |
| Product Category | Logic - Counters, Dividers | - | IC Chips |
| Series | 74AS | - | 74AS |
| Packaging | Tube | - | Tube |
| Package Case | 16-SOIC (0.154", 3.90mm Width) | - | 16-SOIC (0.154", 3.90mm Width) |
| Operating Temperature | 0°C ~ 70°C | - | 0°C ~ 70°C |
| Mounting Type | Surface Mount | - | Surface Mount |
| Direction | Up | - | Up |
| Voltage Supply | 4.5 V ~ 5.5 V | - | 4.5 V ~ 5.5 V |
| Supplier Device Package | 16-SOIC | - | 16-SOIC |
| Number of Elements | 1 | - | 1 |
| Logic Type | Binary Counter | - | Binary Counter |
| Number of Bits per Element | 4 | - | 4 |
| Reset | Asynchronous | - | Synchronous |
| Timing | Synchronous | - | Synchronous |
| Count Rate | 75MHz | - | 75MHz |
| Trigger Type | Positive Edge | - | Positive Edge |